Select the correct answer. if a coin is flipped 10 times, what is the probability that it will show all heads or all tails?

a). (1/2)
b). (1/512)
c). (1/1022)
d). (1/1024)
e). (1/2048)

Aschool typically sells 500 yearbooks each year for 50 dollars each. the economic calls does a project and discovers that they can sell 100 more yearbooks for every $5 decrease in price. the revenue for yearbook sales is equal to the number of yearbooks sold times the price of the yearbook. let x represent the number of $5 decrease in price. if the expression that represents the revenue is written in the form r(x)=(500+ax)(50-bx). to maximize profit, what price should the school charge for the yearbooks? what is the possible maximum revenue? if the school attains the maximum revenue, how many yearbooks will they sell?

Hi, can anyone show me how to do this problem? 100 points for this. in advance

In angle pqr find the measure of